See related story: A World Cup for Gearheads

The German four-legged team defends its title at the German Open.
John Borland
Teams from the middle-size league go at it in a four-on-four match.
John Borland
A hard-fought match in the middle-size league takes place during the 2005 Osaka RoboCup, which was attended by more than 180,000 spectators.
John Borland